I am considering buying this lens to use on my F90x behind an 8" dome. The lens plus a dioptre fits in the housing without using any dome extension ring but it is VERY close to the dome when fully extended. Can anybody tell me whether an extension is necessary. If so, does it matter which one? I already have two different sizes (105 macro & 24/50 zoom) that will move the dome a good bit forward. Next question - how many dioptres do I need?
Any advice/help/experiences gratefully received
Jim

Yes, you need a port extension for this lens and the Aquatica 8" dome. The right extension is VERY important when using a wideangle zoom. I believe you should also use a +4 diopter although +2 may do it.

Just FYI, I have this lens for sale in excellent condition. Email me at james_at_wetpixel.com if you decide you want to purchase one.

I understand your frustration with the lack of email response. They don't reply to the info@aquatica.ca address. Phone. It's the only way to get through. Communication is a disappointing issue lately. It has nothing to do with Canadian holidays, alas.
Marli Wakeling

Marli Wakeling

www.marliwakeling.comDuct tape is like the force. It has a light side, a dark side, and it holds the universe together. ~Carl Zwanzig